FZW series

FZW□ series outdoor high-voltage isolated vacuum load switches are environmentally products without oil or gas pollution.We adopt the linkage structure of isolation contact knife switch and three-phases vacuum interrupters work together.When they open,the evident isolating distances ensure their security,reliability.They are also elaborately designed,and have simple structure as well as small volume.Besides,there isa great convenience to install and maintain the switches.The intelligent controller adopts the modular design,and there is a variety of communication protocols that can be selected.Moreover,it is convenient to be installed and upgraded.The rated voltage of this series of load-breaking switches is 12~72.5kV and they are widely used in transformer substations,industrial and mining enterprises,rural power distribution automation grids and occasions where frequent operations are needed.

Overall dimensions

Technical parameters

 
No. Item                 Value
1 Rated voltage kV 12 40.5 72.5
2 Rated frequency Hz 50
3 Rated current A 630 1250 1600
4 1min power frequency withstand voltage(wet)(dry)phase to phase, to ground/gap kV 34
42/42/48
 
80
68/95/110
135
140/160/200
5 Lightning impulse withstand voltage(peak) phase to phase, to ground/gap kV 75/85 185/215 350/420
6 Rated active load breaking current A 630 1250 1250、1600
7 Rated cable-charging breaking current A 10 10 10
8 Rated close-loop breaking current A 630 1250 1250、1600
9 5% active load breaking current A 31.5 63 31.5
10 Rated short-time withstand current/duration kA/s 20/4 25/4 20、25/4
11 Rated peak withstand current kA 50 63 63、80
12 Rated short-circuit making current kA 50 63 63、80
13 Resistance of main circuit μΩ ≤150
14 Resistance of auxiliary circuit μΩ 400≤R≤1500 500≤R≤1500 600≤R≤1500
15 Small break/Big break mm ≥80/200 ≥180/420 ≥450/690
16 Mechanical life Times 10000 2000

Related case

20150618043905.pdf
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